Identification
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Caption
Lanistes sp., Egypt. The great majority of the gastropods are dextral, i.e., the shells and underlying viscera coil to the right. A few families, genera and species are sinistral (coil to the left). Lanistes is a sinistral genus in an otherwise dextral family. Note the very long, thin tentacles, the thin, elongated anterior foot corners, and the eye on a short peduncle.
Dr. John B. Burch, Ph.D. 
(photographer, copyright holder), Mollusk Division, Museum of Zoology, University of Michigan
